preview images of markdown links

BACKLOG.md

@@ -3,6 +3,7 @@
 - [ ] yt video
 
 ## Dones
+- [x] preview images
 - [x] insert link to image, with preview
 - [x] sorting file picker: devicons, ...
 - [x] dailies and weeklies: don't display whole paths: fix entries: display values

README.md

@@ -14,7 +14,8 @@ A Neovim (lua) plugin for working with a text-based, markdown [zettelkasten](htt
 - calendar support
 - paste images from clipboard
 - toggle [ ] todo status of line
-- insert links to images, with **image previews**, via extension _(Linux only)_
+- insert links to images
+- **image previews**, via extension _(Linux only)_
 
 ##### New features are being announced in the [discussions](https://github.com/renerocksai/telekasten.nvim/discussions)!
 
@@ -302,6 +303,8 @@ The plugin defines the following functions.
     - if the `telescope-media-files.nvim` plugin is installed, **a preview of images / media files will be given** during the search.
     - this function accepts a parameter `{i}`. If `true`, it will enter input mode by pressing the 'A' key. This is useful for being able to continue to type after link insertion. See also: [Bind it](#4-bind-it).
     - example: `insert_link({ i=true })`
+- `preview_img()` : uses the `telescope-media-files.nvim` extension to preview the image / media file under the cursor of a markdown image link: `![](path/to/img.png)`. The cursor must be between `(the two parenthesis)`.
+    - **note**: this requires the `telescope-media-files.nvim` plugin to be installed.
 - `setup(opts)`: used for configuring paths, file extension, etc.
 
 To use one of the functions above, just run them with the `:lua ...` command.
@@ -419,6 +422,7 @@ nnoremap <leader>zt :lua require('telekasten').toggle_todo()<CR>
 nnoremap <leader>zb :lua require('telekasten').show_backlinks()<CR>
 nnoremap <leader>zF :lua require('telekasten').find_friends()<CR>
 nnoremap <leader>zI :lua require('telekasten').insert_img_link({ i=true })<CR>
+nnoremap <leader>zp :lua require('telekasten').preview_img()<CR>
 
 " we could define [[ in **insert mode** to call insert link
 " inoremap [[ <ESC>:lua require('telekasten').insert_link()<CR>

doc/telekasten.txt

@@ -454,6 +454,15 @@ telekasten.insert_img_link({opts})~
 
     Default: `nil`
 
+                                                   *telekasten.preview_img()*
+telekasten.preview_img()~
+  Uses the `telescope-media-files.nvim` extension to preview the image / media
+  file under the cursor of a markdown image link: `![](path/to/img.png)`. The
+  cursor must be between `(the two parenthesis)`.
+
+  Note:~
+    This requires the `telescope-media-files.nvim` plugin to be installed.
+
 --------------------------------------------------------------------------------
 Section 3.1: Templates                                    *telekasten.templates*
 
@@ -584,6 +593,7 @@ However, here are some suggestions:
     nnoremap <leader>zb :lua require('telekasten').show_backlinks()<CR>
     nnoremap <leader>zF :lua require('telekasten').find_friends()<CR>
     nnoremap <leader>zI :lua require('telekasten').insert_img_link({ i=true })<CR>
+    nnoremap <leader>zp :lua require('telekasten').preview_img()<CR>
 
     " we could define [[ in **insert mode** to call insert link
     " inoremap [[ <ESC>:lua require('telekasten').insert_link()<CR>

lua/telekasten.lua

@@ -471,6 +471,40 @@ local function FollowLink(opts)
 	})
 end
 
+--
+-- PreviewImg:
+-- -----------
+--
+-- preview media
+--
+local function PreviewImg(_)
+	vim.cmd("normal yi)")
+	local fname = vim.fn.getreg('"0')
+
+	-- check if fname exists anywhere
+	local fexists = file_exists(M.Cfg.home .. "/" .. fname)
+
+	if fexists == true then
+		find_files_sorted({
+			prompt_title = "Preview image/media",
+			cwd = M.Cfg.home,
+			default_text = fname,
+			find_command = M.Cfg.find_command,
+			filter_extensions = { ".png", ".jpg", ".bmp", ".gif", ".pdf", ".mp4", ".webm" },
+			preview_type = "media",
+
+			attach_mappings = function(prompt_bufnr, _)
+				actions.select_default:replace(function()
+					actions.close(prompt_bufnr)
+				end)
+				return true
+			end,
+		})
+	else
+		print("File not found: " .. M.Cfg.home .. "/" .. fname)
+	end
+end
+
 --
 -- FindFriends:
 -- -----------
@@ -557,7 +591,7 @@ end
 -- InsertImgLink:
 -- --------------
 --
--- Select from notes
+-- Insert link to image / media, with optional preview
 --
 local function InsertImgLink(opts)
 	opts = opts or {}
@@ -915,5 +949,6 @@ M.toggle_todo = ToggleTodo
 M.show_backlinks = ShowBacklinks
 M.find_friends = FindFriends
 M.insert_img_link = InsertImgLink
+M.preview_img = PreviewImg
 
 return M